3556573638623 has 4 divisors (see below), whose sum is σ = 3643319337168. Its totient is φ = 3469827940080.

The previous prime is 3556573638601. The next prime is 3556573638643. The reversal of 3556573638623 is 3268363756553.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3556573638623 - 2⁴⁰ = 2457062010847 is a prime.

It is a super-2 number, since 2×3556573638623² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556573638643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43372849211 + ... + 43372849292.

It is an arithmetic number, because the mean of its divisors is an integer number (910829834292).

Almost surely, 2^{3556573638623} is an apocalyptic number.

3556573638623 is a deficient number, since it is larger than the sum of its proper divisors (86745698545).

3556573638623 is an equidigital number, since it uses as much as digits as its factorization.

3556573638623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86745698544.

The product of its digits is 244944000, while the sum is 62.

The spelling of 3556573638623 in words is "three trillion, five hundred fifty-six billion, five hundred seventy-three million, six hundred thirty-eight thousand, six hundred twenty-three".